The IRS has made available several tax breaks for military personnel, especially over the last few decades. For federal tax purposes, the U.S. Armed Forces includes officers and enlisted personnel in all regular and reserve units controlled by the Secretaries of Defense, the Army, Navy and Air Force. The Coast Guard is also included, but not the U.S. Merchant Marine or the American Red Cross. Some of these tax breaks are retroactive, and thus require the filing of an amended return by the affected taxpayer. Remember that if you away from home because of duty in the military, your spouse can use a power of attorney to file a joint return on your behalf. Here are ten tax breaks worth noting for military personnel.